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Germany: Troubling Times for Wooden In-Roof Collectors

Submitted by Baerbel Epp on April 24, 2017
wooden-frame solar collectorsWooden-frame solar collectors installed by the German cooperative BUSO Bund Solardach may have been the cause of at least 11 fires in 2015 and 2016, listed by It looks as if fire broke out during collector stagnation. BUSO, a cooperative of about 100 solar installers, was one of the pioneers of solar roof installations in Germany. It used collectors produced by Buschbeck, a company which went bankrupt last year. 

Germany: ENERGETIKhaus100 Reaches up to 98% Solar Coverage

Submitted by Baerbel Epp on March 13, 2013

Whereas a so-called Sonnenhaus (solar house) is only allowed to carry the name if solar energy covers at least half of its heat demand, the objectives of the German FASA even go a step further. With scientific support from the Technical University of Freiberg, the building contractor created the ENERGETIKhaus100: a possibility to go completely without oil and gas and instead cover up to 98% of the energy demand for heating and hot water by solar energy. The results of a monitoring programme, which the University of Freiberg conducted in an ENERGETIKhaus100 in Berthelsdorf/Saxony over a 5-year period (see photo), have confirmed the high share in renewable sources. FASA built the first 100 % solar house in cooperation with Timo Leukefeld’s former solar installation company Soli fer Solardach in 2006. In the meantime, the contractor has set up almost 50 houses of this type.
Photo: FASA AG

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